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A desktop computer, if it works nonstop, might be able to solve one bitcoin problem in two to three days, however, it might take longer. Computer creating bitcoin Caiaimage/Adam Gault / Getty Images A single personal computer that mines bitcoins may earn 50 cents to 75 cents per day, minus electricity costs. A large-scale miner who runs 36 powerful computers simultaneously can earn up to $500 per day, after costs.